1887
Volume 28, Issue 5
  • E-ISSN: 1365-2117

Abstract

Abstract

The Salar de Atacama forms one of a series of forearc basins developed along the western flank of the Central Andes. Exposed along the northwest margin of the basin, a salt‐cored range, the Cordillera de la Sal, records the Mid‐Miocene to recent sedimentological and structural development of this basin. Sediments of the Mid‐Miocene Vilama Formation record the complex interaction between regional/local climate change, halokinesis and compressional deformation. This study reveals how these factors have controlled the facies development and distribution within the Salar de Atacama. Detailed sedimentary logging, cross‐sections and present day geomorphology through the northern Cordillera de la Sal have been used to establish a lithostratigraphy, chronostratigraphy and the regional distribution of the Vilama Formation. The Vilama Formation documents an increase in aridity with a hiatus in sedimentation from Mid‐Miocene to 9 Ma with initial uplift of the Cordillera de la Sal. From 9 Ma to 8.5 Ma deposition of a meandering fluvial system is recorded followed by a rapid decrease in sedimentation till 6 Ma. From 6 to 2 Ma, the deposition of extensive palustrine carbonates and distal alluvial–mudflat–lacustrine demonstrates the existence of an extensive lake within the Salar de Atacama. Post 2 Ma, the lake decreased in size and braided alluvial gravels associated with alluvial fans were widespread through the region suggesting a final shift to hyperarid conditions. By comparing the Vilama Formation with similar age facies throughout northern Chile and southern Peru, several shifts in climate are recognized. Climate signatures within northern Chile appear to be largely diachronous with the last regional event in the Mid‐Miocene. Since that time, humid events have been restricted to either Precordillerian basins or the Central Atacama. Within the Central Atacama, the final switch to hyperarid conditions was not till the earliest Pleistocene, much later than previously estimated within the region.

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2015-07-14
2024-03-28
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References

  1. Alpers, C.N. & Brimhall, G.H. (1988) Middle Miocene climatic‐change in the Atacama Desert, Northern Chile – evidence from supergene mineralization at La‐Escondida. Geol. Soc. Am. Bull., 100, 1640–1656.
    [Google Scholar]
  2. Arriagada, C., Cobbold, P., Mpodozis, C. & Roperch, P. (2002) Cretaceous to Paleogene compressional tectonics during the deposition of the Purilactis Group, pp. 41–44. Salar de Atacama, Proceeds V IRD‐ISAG, Toulouse.
    [Google Scholar]
  3. Barde, J.‐P., Chamberlain, P., Galavazi, M., Harwijanto, J., Marsky, J., Gralla, P. & van den Belt, F. (2002) Sedimentation during halokinesis: Permo‐Triassic reservoirs of the Saigak Field, Precaspian Basin, Kazakhstan. Petrol. Geosci., 8, 177–187.
    [Google Scholar]
  4. Blanco, N., Mpodozis, C., Gardeweg, M. & Jordan, T. (2000). Sedimentación del Mioceno Superior‐Plioceno en la cuenca del Salar de Atacama. Estratigrafia de la Formación Vilama, II Region de Antofagasta, Proc. IX Congreso Geologico Chileno Puerto Varas, Chile, pp. 446–450.
  5. Bobst, A.L., Lowenstein, T.K., Jordan, T.E., Godfrey, L.V., Ku, T.‐L. & Luo, S. (2001) A 106 Ka paleoclimate record from drill core of the Salar De Atacama, Northern Chile. Palaeogeogr. Palaeoclimatol. Palaeoecol., 173, 21–42.
    [Google Scholar]
  6. Clarke, J.D.A. (2006) Antiquity of aridity in the Chilean Atacama Desert. Geomorphology, 73, 101–114.
    [Google Scholar]
  7. Dingman, R. (1965) Quadrangulo San Pedro de Atacama, Carta no. 14, Carta Geologica de Chile. Instituto de Investigaciones Geoligcas, Santiago, Chile, 29.
    [Google Scholar]
  8. Dunai, T.J., Lopez, G.A.G. & Juez‐Larre, J. (2005) Oligocene‐miocene age of aridity in the Atacama Desert revealed by exposure dating of erosion‐sensitive landforms. Geology, 33, 321–324.
    [Google Scholar]
  9. Evenstar, L.A., Hartley, A.J., Stuart, F.M., Mather, A.E., Rice, C.M. & Chong, G. (2009) Multiphase development of the Atacama Planation Surface recorded by cosmogenic He‐3 exposure ages: Implications for uplift and Cenozoic climate change in western South America. Geology, 37, 27–30.
    [Google Scholar]
  10. Farías, M., Charrier, R., Comte, D., Martinod, J. & Hérail, G. (2005) Late Cenozoic deformation and uplift of the western flank of the Altiplano: evidence from the depositional, tectonic, and geomorphologic evolution and shallow seismic activity (northern Chile at 19°30′S). Tectonics, 24, TC4001.
    [Google Scholar]
  11. Flint, S. (1985) Alluvial fan and playa sedimentation in an Andean arid closed basin: The Paciencia Group, Antofagasta Province, Chile. J. Geol. Soc., 142, 533–546.
    [Google Scholar]
  12. Flint, S., Turner, P., Jolley, E.J. & Hartley, A.J. (1993) Extensional tectonics in convergent margin basins – an example from the Salar‐De‐Atacama, Chilean Andes. Geol. Soc. Am. Bull., 105, 603–617.
    [Google Scholar]
  13. Gardeweg, M. & Ramírez, C.F. (1987) La Pacana caldera and the Atana Ignimbrite – a major ash‐flow and resurgent caldera complex in the Andes of northern Chile. Bull. Volcanol., 49, 547–566.
    [Google Scholar]
  14. Gayo, E.M., Latorre, C., Santoro, C.M., Maldonado, A. & De Pol‐Holz, R. (2012) Hydroclimate variability in the low‐elevation Atacama Desert over the last 2500 yr. Clim. Past, 8, 287–306.
    [Google Scholar]
  15. Grosjean, M., van Leeuwen, J., van der Knapp, W., Geyh, M., Ammann, B., Tanner, W., Messerli, B., Núñez, L., Valero‐Carcés, B. & Veit, H. (2001) A 22,000 14C year BP sediment and pollen record of climate change from Laguna Miscanti (23°S), northern Chile. Global Planet. Change, 28, 35–51.
    [Google Scholar]
  16. Hartley, A.J. (2003) Andean uplift and climate change. J. Geol. Soc., 160, 7–10.
    [Google Scholar]
  17. Hartley, A.J. & Chong, G. (2002) Late Pliocene age for the Atacama Desert: implications for the desertification of western South America. Geology, 3, 43–46.
    [Google Scholar]
  18. Hartley, A.J. & Evenstar, L. (2010) Cenozoic stratigraphic development in the north Chilean forearc: implications for basin development and uplift history of the Central Andean margin. Tectonophysics, 495, 67–77.
    [Google Scholar]
  19. Hartley, A.J. & Rice, C.M. (2005) Controls on supergene enrichment of porphyry copper deposits in the Central Andes: a review and discussion. Miner. Deposita, 40, 515–525.
    [Google Scholar]
  20. Hartley, A.J., Flint, S., Turner, P. & Jolley, E.J. (1992) Tectonic Controls on the Development of a Semiarid, Alluvial Basin as Reflected in the Stratigraphy of the Purilactis Group (Upper Cretaceous‐Eocene), Northern Chile. J. S. Am. Earth Sci., 5, 275–296.
    [Google Scholar]
  21. Hartley, A.J., Chong, G., Houston, J. & Mather, A.E. (2005) 150 million years of climatic stability: evidence from the Atacama Desert, northern Chile. J. Geol. Soc., 162, 421–424.
    [Google Scholar]
  22. Hollingworth, S.E. & Rutland, R.W.R. (1968) Studies of Andean uplift part I‐post‐cretaceous evolution of the San Bartolo Area, North Chile. Geol. J., 6, 49–62.
    [Google Scholar]
  23. Jolley, E.J., Turner, P., Williams, G.D., Hartley, A.J. & Flint, S. (1990) Sedimentological response of an alluvial system to neogene thrust tectonics, Atacama Desert, Northern Chile. J. Geol. Soc., 147, 769–784.
    [Google Scholar]
  24. Jordan, T.E., Mpodozis, C., Munoz, N., Blanco, N., Pananont, P. & Gardeweg, M. (2007) Cenozoic subsurface stratigraphy and structure of the Salar de Atacama Basin, Northern Chile. J. S. Am. Earth Sci., 23, 122–146.
    [Google Scholar]
  25. Jordan, T.E., Kirk‐Lawlor, N.E., Blanco, N. P., Rech, J.A. & Cosentino, N.J. (2014) Landscape modification in response to repeated onset of hyperarid paleoclimate states since 14 Ma, Atacama Desert, Chile. Geol. Soc. Am. Bull.126, 1016–1046.
    [Google Scholar]
  26. Kape, S.J. (1996) Basin analysis of the Oligo‐Miocene Salar de Atacama basin, northern Chile. PhD Thesis, University of Birmingham.
    [Google Scholar]
  27. Lenters, J.D. & Cook, K.H. (1997) On the origin of the Bolivian High and related circulation features of the South American climate. J. Atmos. Sci., 54, 656–678.
    [Google Scholar]
  28. Macellari, C.E., Su, M. & Townsend, F. (1991) Structure and seismic stratigraphy of the Atacama Basin, Northern Chile. Proc. VI Congr. Geol. Chileno, pp. 133–137.
  29. Marinovic, N. & Lahsen, A. (1984) Carta Geologica de Chile 1:250,000 Hoja Calama, Servicio Nacional de Geologia y Mineria., pp. 1–150.
  30. May, G., Hartley, A.J., Stuart, F.M. & Chong, G. (1999) Tectonic signatures in arid continental basins: an example from the Upper Miocene‐Pleistocene, Calama Basin, Andean forearc, Northern Chile. Palaeogeogr. Palaeoclimatol. Palaeoecol., 151, 55–77.
    [Google Scholar]
  31. Mortimer, C. & Saric, N. (1975) Cenozoic Studies in Northernmost Chile. Geol. Rundsch., 64, 395–420.
    [Google Scholar]
  32. Mpodozis, C., Arriagada, C., Basso, M., Roperch, P., Cobbold, P. & Reich, M. (2005) Late Mesozoic to Paleogene stratigraphy of the Salar de Atacama Basin, Antofagasta, Northern Chile: Implications for the tectonic evolution of the Central Andes. Tectonophysics, 399, 125–154.
    [Google Scholar]
  33. Munoz, J., Charrier, R. & Reutter, K.J. (1997) Evolución de la Cuenca del Salar de Atacama: Inversión tectónica y relleno de una cuenca de antepaís de retroarco. Proc. VIII Congr. Geol. Chileno, 5–199.
    [Google Scholar]
  34. Muñoz, N., Charrier, R. & Jordan, T. (2002) Interactions between basement and cover during the evolution of the Salar de Atacama Basin, northern Chile. Rev. Geol. Chile, 29, 55–80.
    [Google Scholar]
  35. Muñoz, N., Charrier, R. & Radic, J.P. (2000) Formación de la Cordillera de la Sal por propagación de fallas y plegamiento por despegue, pp. 604–608. II Región, Chile, IX Congreso Geológico Chileno.
    [Google Scholar]
  36. Naranjo, J.A., Ramirez, C.F. & Paskoff, R. (1994) Morphostratigraphic Evolution of the Northwestern Margin of the Salar‐De‐Atacama Basin (23‐Degrees‐S‐68‐Degrees‐W). Rev. Geol. Chile, 21, 91–103.
    [Google Scholar]
  37. Nishiizumi, K., Caffee, M.W., Finkel, R.C., Brimhall, G. & Mote, T. (2005) Remnants of a fossil alluvial fan landscape of Miocene age in the Atacama Desert of northern Chile using cosmogenic nuclide exposure age dating. Earth Planet. Sci. Lett., 237, 499–507.
    [Google Scholar]
  38. Pananont, P., Mpodozis, C., Blanco, N., Jordan, T.E. & Brown, L.D. (2004) Cenozoic evolution of the northwestern Salar de Atacama Basin, northern Chile. Tectonics23, TC6007.
    [Google Scholar]
  39. Pinto, L., Hérail, G. & Charrier, R. (2004) Syntectonic sedimentation associated with Neogene structures in the Precordillera of Moquella Zone, Tarapacá (19°15′S, northern Chile). Rev. Geol. Chile, 31, 19–44.
    [Google Scholar]
  40. Placzek, C., Quade, J., Betancourt, J.L., Patchett, P.J., Rech, J.A., Latorre, C., Matmon, A., Holmgren, C. & English, N.B. (2009) Climate in the dry central Andes over geologic, millennial, and interannual timescales. Ann. Mo. Bot. Gard., 96, 386–397.
    [Google Scholar]
  41. Placzek, C.J., Matmon, A., Granger, D.E., Quade, J. & Niedermann, S. (2010) Evidence for active landscape evolution in the hyperarid Atacama from multiple terrestrial cosmogenic nuclides. Earth Planet. Sci. Lett., 295, 12–20.
    [Google Scholar]
  42. Quade, J., Rech, J.A., Betancourt, J.L., Latorre, C., Quade, B., Rylander, K.A. & Fisher, T. (2008) Paleowetlands and regional climate change in the central Atacama Desert, northern Chile. Quatern. Res., 69, 343–360.
    [Google Scholar]
  43. Quang, C.X., Clark, A.H., Lee, J.K.W. & Hawkes, N. (2005) Response of supergene processes to episodic Cenozoic uplift, pedimeńt erosion, and ignimbrite eruption in the Porphyry Copper Province of southern Perú. Econ. Geol., 100, 87–114.
    [Google Scholar]
  44. Ramírez, C.F. (1979) Geología del Cuadrángulo Río Grande y sector nororiental del Cuadrángulo Barros Arana, p. 139. Provincia El Loa, II región, Departamento de Geología Universidad de Chile, Santiago.
    [Google Scholar]
  45. Rech, J.A., Currie, B.S., Michalski, G. & Cowan, A.M. (2006) Neogene climate change and uplift in the Atacama Desert, Chile. Geology, 34, 761–764.
    [Google Scholar]
  46. Rech, J.A., Currie, B.S., Shullenberger, E.D., Dunagan, S.P., Jordan, T.E., Blanco, N., Tomlinson, A.J., Rowe, H.D. & Houston, J. (2010) Evidence for the development of the Andean rain shadow from a Neogene isotopic record in the Atacama Desert, Chile. Earth Planet. Sci. Lett., 292, 371–382.
    [Google Scholar]
  47. Ruetter, K.‐J., Charrier, R., Götze, H.‐J., Schurr, B., Wigger, P., Scheuber, E., Giese, P., Reuther, C.‐D., Schmidt, S., Rietbrock, A., Chong, G. & Belmonte‐Pool, A. (2006) The Salar de Atacama Basin: a Subsiding Block within the Western Edge of the Altiplano‐Puna Plateau. In: ( Ed. by O. Oncken, G. Chong, G. Franz, P. Giese, H.‐J. Götze, V.A. Ramos, M.R. Strecker, & P. Wigger ) The Andes. Springer, Berlin, Heidelberg, Germany.
  48. Sáez, A., Cabrera, L., Jensen, A. & Chong, G. (1999) Late Neogene lacustrine record and palaeogeography in the Quillagua‐Llamara basin, Central Andean fore‐arc (northern Chile). Palaeogeogr. Palaeoclimatol. Palaeoecol., 151, 5–37.
    [Google Scholar]
  49. Sáez, A., Cabrera, L., Garcés, M., Bogaard, P., Jensen, A. & Gimeno, D. (2012) The stratigraphic record of changing hyperaridity in the Atacama desert over the last 10 Ma. Earth Planet. Sci. Lett., 355, 32–38.
    [Google Scholar]
  50. Salisbury, M.J., Jicha, B.R., De Silva, S.L., Singer, B.S., Jiménez, N.C. & Ort, M.H. (2010) 40Ar/39Ar Chronostratigraphy of Altiplano‐Puna Volcanic Complex Ignimbrites Reveals the Development of a Major Magmatic Province. Geol. Soc. Am. Bull., B30280, 1.
    [Google Scholar]
  51. Schurr, B. & Rietbrock, A. (2004) Deep seismic structure of the Atacama basin, northern Chile. Geophys. Res. Lett., 31, L12601.
    [Google Scholar]
  52. Sillitoe, R.H., Mortimer, G. & Clark, A.H. (1968) A chronology of landform evolution and supergene mineral alteration, southern Atacama Desert, Chile. Instit. Mining Metall. Trans. Section B: Appl. Earth Sci.77, B166–BI69.
    [Google Scholar]
  53. Silva, D. (1989) Geochronology and stratigraphy of the ignimbrites from the 21°30′S to 23°30′S portion of the Central Andes of northern Chile. J. Volcanol. Geotherm. Res., 37, 93–131.
    [Google Scholar]
  54. Thiry, M., Milnes, A.R., Rayot, V. & Simon‐Coincon, R. (2006) Interpretation of palaeoweathering features and successive silicifications in the Tertiary regolith of inland Australia. J. Geol. Soc., 163, 723–736.
    [Google Scholar]
  55. Tucker, M. (2011) Sedimentary Rocks in the Field: A Practical Guide (Geological Field Guide).
  56. Victor, P., Oncken, O. & Glodny, J. (2004) Uplift of the western Altiplano plateau: Evidence from the Precordillera between 20° and 21°S (northern Chile). Tectonics23, TC4004.
    [Google Scholar]
  57. Vuille, M. & Ammann, C. (1997) Regional snowfall patterns in the high, arid Andes. Clim. Change., 36, 413–423.
    [Google Scholar]
  58. Wilkes, E. & Görler, K. (1994) Sedimentary and structural evolution of the Salar de Atacama, Northern Chile. In: Tectonics of the Southern Central Andes (Ed. by P.Wigger & K.J.Reutter ), pp. 171–188. Springer, Berlin, Heidelberg, Germany.
    [Google Scholar]
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